Further complicating the issue is that for as long as I can remember, the two organizations have been kind of comingled at Ruby conferences, taking money. You want a Bundler sticker? Go to the Ruby Central table. You want a Bundler t-shirt? They'll happily sell you one for a donation. IANAL, but there has to be some nuance to "ownership" based on how it's presented to those who didn't read the fine print.